STUBBORN RASH

so I had this raw rash on my inner thigh and finally it’s going away (used desitin+a&d oinment) but now I’m having irritation on the lips of my vagina. Before I used the desitin and the ointment I went to the doctors and they gave me a cream (lotrimin) it helped with the itching but the rash never went away. Anyone ever experienced this before??